270+ free browser-based PDF, text & dev tools. Fast, private, no sign-up. Files are processed locally in your browser — never uploaded.
PDF Tools
- PDF Compress — Reduce PDF file size while maintaining quality. Ideal for email attachments and uploads.
- Merge PDF — Combine multiple PDF files into a single document. Easy drag and drop ordering.
- Split PDF by Size — Split large PDF files by file size. Useful for email limits and uploads.
- Remove PDF Password — Unlock password-protected PDF files. Access your own locked documents easily.
- PDF Metadata Viewer — View hidden properties in PDF files. See author, dates, and creation info.
- PDF to JPG Converter — Convert PDF pages to high-quality JPEG images with adjustable DPI and quality.
- PDF to PNG Converter — Convert PDF pages to crisp, lossless PNG images. Perfect for diagrams and text.
- PDF Text Extractor — Extract text from PDF files to plain text. Works with any text-based PDF instantly.
- PDF to Word Converter — Convert PDF to editable Word (.docx) free — 100% private, browser-based, no upload or signup.
- PDF Page Rotator — Rotate all PDF pages by 90°, 180°, or 270°. Fix sideways scans instantly.
- PDF Page Extractor — Extract specific pages from any PDF with flexible range syntax and reorder support.
- PDF Watermark — Add a CONFIDENTIAL or custom text watermark to every PDF page. Adjustable opacity, color, rotation.
- PDF Page Numbers — Add customizable page numbers to PDF — 4 formats, 6 positions, adjustable size and margin.
- Delete PDF Pages — Remove unwanted pages (blanks, ads, drafts) from any PDF using flexible range syntax.
- PDF Reorder Pages — Rearrange PDF pages in any order — move up/down, remove, or reverse the entire document.
- PDF Word Count — Count words, characters, sentences, paragraphs in any text-based PDF. Per-page breakdown.
- PDF Split by Page Range — Split a PDF into multiple files using custom page ranges. Lossless, vector-perfect output.
- PDF Crop Pages — Trim uniform margins from every page — perfect for scans, e-readers, and printing.
- PDF N-Up (Pages per Sheet) — Place 2, 4, 6, 8, or 9 PDF pages on each A4 sheet — slide handouts and paper saving.
- Add Blank Pages to PDF — Insert empty pages after, before, or every Nth page — note-taking handouts and booklets.
- PDF Flatten — Lock form fields, annotations, and signatures by rasterising pages into an image-only PDF.
- Sign PDF (Typed Signature) — Add a typed italic signature with auto-date stamp to any PDF page. Five positions.
- PNG to PDF Converter — Combine PNG images into one PDF — preserves transparency, no watermark, browser-based.
- Word to PDF Converter — Convert Word .docx documents to PDF free — no upload, no watermark, no signup.
- Excel to PDF Converter — Convert Excel (.xlsx/.xls), CSV, and ODS spreadsheets to PDF — multi-sheet, no upload.
- Markdown to PDF — Convert Markdown (.md) to clean vector PDF — tables, code blocks, no upload, no watermark.
dev tools
- XML Formatter & Minifier — Beautify or minify any XML — SOAP, RSS, SVG, sitemap. Browser-based parser.
- XML to JSON Converter — Parse any well-formed XML into a clean JSON tree with attributes and arrays.
- JSON to XML Converter — Convert JSON to well-formed XML — supports attributes, custom root, declaration.
- CSV Viewer — Open CSV or TSV files in your browser — sort, search, paginate, export filtered view.
- JSON to CSV Converter — Convert JSON data to CSV format. Export to spreadsheets easily.
- CSV to JSON Converter — Convert CSV data to JSON format. Useful for API development.
- JSON Formatter — Format, beautify, or minify JSON with customizable indentation.
- JSON Validator — Validate JSON syntax and find errors with line and column numbers.
- HTML Minifier — Compress HTML by removing comments, whitespace, and line breaks.
- CSS Minifier — Minify CSS by stripping comments, whitespace, and unnecessary characters.
- JavaScript Minifier — Compress JavaScript by removing comments, whitespace, and empty lines.
- Base64 Encoder/Decoder — Encode text to Base64 or decode Base64 back to text. UTF-8 support.
- URL Encoder/Decoder — Percent-encode text for URLs or decode encoded URLs back to text.
- HTML Entity Encoder — Encode special characters to HTML entities or decode them back.
- Regex Tester — Test regular expressions with real-time match highlighting and groups.
- JWT Decoder — Decode JSON Web Tokens to inspect header and payload claims.
- cURL to Fetch Converter — Convert any cURL command into a JavaScript fetch() call. Headers, body, auth — all preserved.
- Mock JSON Generator — Generate realistic fake JSON user data for tests, prototypes, and API stubs.
- Gitignore Generator — Build a .gitignore for Node, Python, React, Java, macOS, VSCode and more presets — copy or download.
- Dockerfile Generator — Generate clean multi-stage Dockerfiles for Node, Python, static sites, or Go with non-root users.
- .env Formatter & Validator — Format, sort, validate .env files and auto-generate a safe .env.example template.
- Markdown to HTML — Convert Markdown syntax to clean HTML with live preview.
- Unix Timestamp Converter — Convert between Unix timestamps and human-readable dates.
- Cron Expression Parser — Parse cron expressions and see schedules in plain English.
- JSON Diff — Compare two JSON objects and find differences.
- Diff Checker — Compare two texts line-by-line and highlight differences.
- SQL Formatter — Format and beautify SQL queries with proper indentation.
- Tab to Spaces — Convert tabs to spaces or spaces to tabs with custom width.
- HTML Runner — Write HTML and render it instantly in a secure sandboxed preview.
- CSS Runner — Test CSS against editable markup with a live sandboxed preview.
- JavaScript Runner — Run JavaScript in your browser with a real console and error lines.
- HTML, CSS & JS Runner — Full three-file web playground with live preview and console.
- TypeScript Runner — Transpile TypeScript in the browser and run it in a sandbox.
- Python Runner — Run real Python 3 in your browser using Pyodide (WebAssembly).
- SQL Runner — Practise SQL against a real in-browser SQLite database.
- JSON Playground — Validate, format, measure and query JSON with error line numbers.
- Markdown Runner — Render Markdown to sanitized HTML with tables and task lists.
- JSON Path Finder — Navigate JSON structures and find dot-notation paths to values.
- JSON to TypeScript — Convert JSON to TypeScript interfaces or type aliases instantly.
- YAML ↔ JSON Converter — Convert YAML to JSON and JSON to YAML in both directions.
- Image to Base64 — Encode images to Base64 data URLs and decode Base64 to images.
- HTML Formatter — Beautify minified or scraped HTML with consistent indentation. Pure browser JavaScript, comments preserved.
- JSON Sort Keys — Recursively sort every JSON object key alphabetically. Cleaner diffs, canonical configs, deterministic output.
- HTTP Status Code Lookup — Search and filter every common HTTP status code with meanings, categories, and SEO context.
- Subnet Calculator — Calculate IPv4 subnet details from any IP address and CIDR prefix. Network, broadcast, usable range, mask.
- HTML to Markdown — Convert HTML to clean Markdown for Git, Hugo, Astro, or README files. DOMParser-based, 100% private.
- JavaScript Escape / Unescape — Escape strings for Unicode, regex, HTML, and URL contexts — or unescape them back.
- HTML Table to CSV — Extract data from HTML tables into clean CSV format. Supports multiple tables and custom delimiters.
- TSV to CSV Converter — Convert tab-separated data to RFC 4180-compliant CSV.
- MIME Type Lookup — Search MIME content types by extension or name.
- User Agent Parser — Decode any User-Agent string into browser, OS, and device.
- URL Parser — Break any URL into its component parts and query parameters.
- Query String Builder — Compose properly-encoded URL query strings from key/value pairs.
- ULID Generator — Generate time-sortable 26-character ULID identifiers.
- Hex to Text Converter — Decode hex strings to text and encode text to hex.
- ASCII Table Lookup — Browse and search the standard 128-character ASCII table.
- Number Base Converter — Convert numbers between any pair of bases from 2 to 36.
- Truth Table Generator — Generate truth tables for Boolean logic expressions.
- Programming Case Converter — Convert between camelCase, PascalCase, snake_case, kebab-case and more.
- Email Validator — Check email syntax in bulk against RFC 5322 rules.
- Random IP Generator — Generate random IPv4 or IPv6 addresses for test data and mocks.
- URL Path Builder — Compose URLs from base, path, and properly-encoded query params.
- Data URI Generator — Encode files and text into Base64 data URIs.
- Browser Capability Checker — Detect browser features and capabilities.
- Responsive Breakpoint Viewer — Reference common CSS breakpoints and device sizes.
- Live Viewport Size — See live viewport dimensions as you resize.
- Network Information Display — View connection type, downlink, and RTT.
- HTTP Header Reference — Quick reference for common HTTP headers.
writing tools
- Markdown Table Generator — Convert CSV, TSV, or pasted spreadsheet data into GitHub-flavoured Markdown tables.
- Lorem Ipsum Generator — Generate placeholder text by paragraphs, sentences, or words.
- Text Reverser — Reverse text by characters, words, or lines with Unicode support.
- Letter Counter — Count letters, digits, and special characters with frequency analysis.
- Sentence Counter — Count sentences and analyze average sentence length.
- Readability Score Checker — Check Flesch, Fog, and grade-level readability scores.
- Random Word Generator — Generate random English words for brainstorming and games.
- Palindrome Checker — Check if a word, phrase, or number is a palindrome.
- Text Repeater — Repeat any text up to 1,000 times with customizable separators.
- Acronym Generator — Build memorable acronyms from any list of words.
- Anagram Solver — Rearrange letters and check anagram equivalence.
- Reading Time Calculator — Estimate reading and speaking time for any article or script.
- Markdown Previewer — Side-by-side Markdown editor with live HTML preview.
utility tools
- Text to Speech — Read any text aloud with browser voices. Adjustable rate, pitch, volume; dozens of languages.
- QR Code Generator — Generate QR codes from URLs or text with custom colors.
- Pomodoro Timer — Focus timer with customizable work and break intervals.
- Stopwatch — High-precision stopwatch with lap timing and history.
- Countdown Timer — Set a countdown timer with alerts and custom durations.
- Time Zone Converter — Convert any date and time between 400+ IANA time zones. DST-aware. Add unlimited targets.
- Random Number Generator — Cryptographically strong random integers with unique, sort, and range options. Up to 100,000 per click.
- WhatsApp Link Generator — Create wa.me click-to-chat links with optional pre-filled messages. No app or registration needed.
- Coin Flipper — Cryptographically fair heads-or-tails. Flip one coin or up to 10,000 at once with live statistics.
- Dice Roller — Roll d4, d6, d8, d10, d12, d20, d100 with cryptographic randomness. Up to 100 dice at once.
- Morse Code Translator — Translate text to Morse code and back. Listen with audio playback using Web Audio API.
- Typing Speed Test — Test your typing speed in WPM and CPM. Real-time accuracy tracking with instant feedback.
- Tally Counter — Multi-channel click counter that persists across reloads.
- Decision Maker — Random Yes/No or option picker with cryptographic randomness.
- YouTube Thumbnail Downloader — Get every available thumbnail size for any YouTube video.
- Random Team Picker — Split a list of names into balanced random teams.
- Countdown to Date — Live countdown to any future date — days, hours, minutes, seconds.
- Wordle Solver — Filter 5-letter candidates by green, yellow, and gray clues.
- Random Card Drawer — Cryptographically shuffle a 52-card deck and draw cards.
- ASCII Art Text Generator — Turn text into ASCII art banners for READMEs and CLIs.
- World Clock — Live current time in major cities worldwide.
- Barcode Generator — Generate Code 128 barcodes as downloadable SVG.
- Screen Resolution Checker — Check screen resolution, viewport, DPR, and orientation.
- Keyboard Key Tester — Test keyboard keys interactively with a visual layout.
- Internet Speed Estimator — Estimate connection speed with a local browser test.
Text Tools
- Remove Duplicate Lines — Clean up text by removing duplicate lines. Great for lists and data cleanup.
- Word Counter — Count words, characters, sentences, and paragraphs. Includes reading time.
- Text Case Converter — Convert text to lowercase, UPPERCASE, Title Case, and more.
- Text to Binary — Convert text to binary and binary to text instantly.
- Find and Replace — Find and replace text with regex support and match highlighting.
- Line Number Adder — Add line numbers to any text with customizable formatting.
- Sort Lines — Sort lines alphabetically, numerically, by length, or randomly.
- Email Extractor — Pull every email address from any text or HTML. Dedupe, sort, export TXT / CSV — 100% private.
- URL Extractor — Find every hyperlink in any text. Group by domain, dedupe, export TXT / CSV — great for SEO audits.
- Word Frequency Counter — Rank every word by occurrence with counts, percentages, and a visual bar. Stop-word filter and CSV export.
- List Randomizer — Shuffle any list into a random order with cryptographically secure randomness. Supports multiple delimiters.
- Text Length Analyzer — Live character count, word count, lines, sentences, paragraphs, bytes, and unique words.
- Strip HTML Tags — Convert HTML to clean plain text with entity decoding.
- Reverse Each Word — Flip the letters of every word while keeping the sentence order.
- Remove Empty Lines — Strip blank or whitespace-only lines from any text block.
- Text Shuffler — Shuffle words, lines, or characters with cryptographic randomness.
- Unicode Text Styler — Convert text to fullwidth, circled, bold, and more.
- Binary to Text Converter — Decode binary code back to readable ASCII / UTF-8 text instantly.
security tools
- Password Generator — Generate strong, random passwords with customizable length and character types.
- MD5 Hash Generator — Generate MD5 hashes from any text. Useful for checksums and data verification.
- SHA-256 Hash Generator — Generate cryptographic SHA-256 hashes. Industry-standard for security applications.
- SHA-512 Hash Generator — Generate SHA-512 hashes with 128-character output. Strongest SHA-2 variant.
- UUID Generator — Generate universally unique identifiers (UUID v4). Cryptographically random.
- Random String Generator — Generate random alphanumeric or hex strings. Configurable length and quantity.
- Password Strength Checker — Analyze password strength with entropy score and improvement suggestions.
- HMAC Generator — Generate HMAC authentication codes with SHA-256, SHA-512, or SHA-1.
- Bcrypt Generator — Generate bcrypt password hashes and verify them against passwords.
- Credit Card Validator — Check Luhn checksum, detect card type (Visa, Mastercard, Amex, etc.), and verify number length instantly.
- ROT13 Encoder / Decoder — Apply the ROT13 Caesar cipher or any custom shift. Encoding and decoding are the same operation.
- Vigenere Cipher — Encrypt and decrypt messages with the classic polyalphabetic Vigenere cipher.
- Caesar Cipher — Encrypt or decrypt text by shifting each letter by a fixed amount.
- Passphrase Generator — Diceware-style multi-word passphrases with cryptographic randomness.
- Password Entropy Calculator — Calculate password strength in bits of entropy.
calc tools
- Percentage Calculator — Calculate percentages: find X% of Y, percentage change, increase, and decrease.
- Age Calculator — Calculate exact age in years, months, and days from any birth date.
- BMI Calculator — Calculate Body Mass Index with metric or imperial units.
- Discount Calculator — Calculate sale prices, savings amount, and total with tax.
- Tip Calculator — Calculate tip amounts and split bills among any number of people.
- Unit Converter — Convert length, weight, temperature, volume, area, speed, and data units.
- Hex to Decimal Converter — Convert between hexadecimal, decimal, binary, and octal.
- Binary to Decimal Converter — Convert binary numbers to decimal, hex, and octal instantly.
- Date Difference Calculator — Calculate days, weeks, months, and years between any two dates.
- Aspect Ratio Calculator — Calculate and scale aspect ratios with common presets.
- Number to Words — Convert numbers to their English word representation.
- Roman Numeral Converter — Convert between Roman numerals and decimal numbers.
- Scientific Calculator — Trig, logs, exponents, parentheses, π and e — evaluated safely in your browser. No eval, with history.
- GPA Calculator — Calculate cumulative GPA on the 4.0 scale. Add courses, credits, and grades with real-time updates.
- Sales Tax & VAT Calculator — Add or remove sales tax, VAT, GST, or HST from any amount. Works for US, UK, EU, AU, IN, CA.
- Invoice Maker — Free professional invoice generator — multi-currency, VAT/GST, discount, instant PDF download. No sign-up, no watermark.
- Day of the Week Finder — Find what weekday any date falls on, plus ISO week, day of year, and leap-year status.
- Fuel Cost Calculator — Estimate fuel consumption and cost for any trip. Supports MPG, L/100km, and multiple currencies.
- Sleep Cycle Calculator — Find the best bedtime or wake time based on 90-minute sleep cycles.
- Calorie Calculator (BMR & TDEE) — Daily calorie needs using the Mifflin-St Jeor formula.
- Water Intake Calculator — Daily hydration target based on weight, activity, and climate.
- Ideal Weight Calculator — Estimate ideal body weight via Devine and Hamwi formulas.
- Heart Rate Zone Calculator — Karvonen training zones for cardio workouts.
- Time Card Calculator — Weekly clock-in/out time tracking with pay calculation.
- Time Duration Calculator — Hours and minutes between two times with overnight support.
- Date Adder / Subtractor — Add or subtract days, weeks, months, or years from any date.
- Markup Calculator — Selling price from cost and markup percentage.
- Profit Margin Calculator — Gross profit and profit margin from revenue and cost.
- ROI Calculator — Return on Investment, absolute gain, and annualized rate.
- CAGR Calculator — Compound Annual Growth Rate from beginning and ending values.
- PayPal Fee Calculator — Estimate PayPal transaction fees and the net you receive.
- Stripe Fee Calculator — Estimate Stripe processing fees and your net payout.
- Pregnancy Due Date Calculator — Estimate due date from last menstrual period (Naegele's rule).
- Blackjack Odds Calculator — Estimate bust probability for any hard total.
- Body Fat Calculator — Estimate body fat % using the U.S. Navy circumference method.
- Fibonacci Generator — Generate the first N Fibonacci numbers with BigInt precision.
- Prime Factorization Calculator — Decompose any integer into its prime factors.
- Quadratic Equation Solver — Solve ax² + bx + c = 0 with real or complex roots.
- Percent Change Calculator — Percentage change between two values with multiplier.
- Odds Converter — Convert decimal, fractional, American odds, and implied probability.
- Seconds to HH:MM:SS Converter — Convert seconds to HH:MM:SS and back with millisecond precision.
- Currency Converter — Convert between 20+ major world currencies.
- Byte Unit Converter — Convert between bits, bytes, KB, MB, GB, TB, PB.
- Temperature Converter — Convert between Celsius, Fahrenheit, Kelvin, and more.
- Ratio Simplifier — Simplify any ratio to its smallest whole-number form.
design tools
- Color Converter — Convert between HEX, RGB, and HSL color formats.
- CSS Gradient Generator — Create linear and radial CSS gradients with live preview.
- Box Shadow Generator — Design CSS box shadows with a visual editor.
- Border Radius Previewer — Preview and generate CSS border-radius values.
- Text Shadow Generator — Design CSS text shadows with a visual editor and live preview.
- Placeholder Image Generator — Generate placeholder images with custom size, color, and text.
- Color Palette Generator — Generate harmonious color palettes from any base color.
- Color Contrast Checker — Check WCAG 2.1 contrast ratio with AA / AAA pass marks for normal text, large text, and UI components.
- CSS Clamp Generator — Build fluid clamp() expressions for responsive typography and spacing — no media queries needed.
- Pixel to REM Converter — Live two-way px ↔ rem conversion with custom root font-size. Built for accessible, user-respecting design.
- Color Blindness Simulator — Preview images and UI through protanopia, deuteranopia, tritanopia, and achromatopsia simulations.
- CSS Unit Converter — Convert any CSS length unit to all others with customizable base font-size and viewport dimensions.
- CSS Triangle Generator — Generate pure-CSS triangles for tooltips, arrows, and speech bubbles. 8 directions, any size or color.
- CSS Cubic Bezier Generator — Design custom easing curves visually with live curve and animation preview. Production-ready CSS.
- CSS Glassmorphism Generator — Design frosted-glass UI panels with backdrop blur, opacity, saturation, and tint. Live preview.
- CMYK Color Converter — Convert HEX and RGB to CMYK percentages for print. Two-way conversion with live preview.
- Neumorphism Generator — Design soft, extruded UI elements with adjustable shadow depth, blur, and shape style.
- CSS Flexbox Generator — Visual CSS flexbox generator with live preview.
- CSS Grid Generator — Generate CSS Grid layouts with custom columns, rows, and gap.
- CSS Animation Generator — Generate ready-to-use CSS keyframe animations.
- Random Color Generator — Generate random HEX, RGB, HSL colors with one click.
- CSS Filter Generator — Visual builder for the CSS filter() property with live preview.
- CSS Scrollbar Generator — Custom WebKit and Firefox scrollbar CSS with live preview.
- CSS Background Pattern Generator — Pure-CSS dotted, grid, and stripe patterns — no image needed.
- Random Gradient Generator — Generate beautiful random CSS gradients with one click.
- Image Resize Aspect Calculator — Compute the missing dimension to preserve image ratio.
- CSS Clip-Path Generator — Design CSS clip-path shapes with live preview.
- CSS Transition Generator — Build CSS transitions with live preview.
- CSS Variable Generator — Generate CSS custom properties for design systems.
- Screen Ruler — Calibrate and measure on-screen pixels.
- Hex to RGB Converter — Convert hex color codes to RGB, RGBA, and HSL with live preview. Supports 3, 6, and 8-digit hex.
image tools
- Image & Screenshot Editor — Edit any image or screenshot with layered text (50 Google fonts), shapes, arrows, and pen. Every element remains editable.
- Image Compressor — Shrink JPG, PNG, and WebP images with adjustable quality. 100% private.
- Photo & Signature Resizer — Crop and resize a photo or signature to exact px/cm and a KB limit for online forms.
- Image Resizer — Resize images to any dimension with social media presets and aspect ratio lock.
- JPG to PNG Converter — Convert JPG images to lossless PNG in your browser. Supports transparency.
- PNG to JPG Converter — Convert PNG to JPG — typically 60–90% smaller files. Custom background colour.
- Image to WebP Converter — Convert JPG, PNG, or GIF to WebP. 25–50% smaller files for faster websites.
- Image Cropper — Crop JPG, PNG, or WebP images with drag-to-crop and aspect ratio lock. 100% private.
- Image Rotator & Flipper — Rotate any angle or flip horizontally/vertically. Fix sideways phone photos in seconds.
- Image Color Picker — Click any pixel to get HEX, RGB, and HSL values. Match brand colours from logos.
- EXIF Viewer — Read camera, lens, date, GPS and other metadata embedded in JPEG photos.
- Image Watermark — Add custom text watermarks with position, opacity, colour, and rotation controls.
- Image to PDF Converter — Combine multiple JPG or PNG images into a single PDF. Fit-to-image, A4, or Letter.
- Image Combiner — Join multiple images side-by-side, stacked, or in a grid. Great for before/after.
- Image Filters & Effects — Apply B&W, sepia, vintage, noir presets plus brightness, contrast, hue sliders.
- Image Border Adder — Add custom borders, rounded corners, and drop shadows to any photo.
- Image to ASCII Art — Convert photos into typeable ASCII art for code, terminal, and chat.
- WebP to JPG / PNG Converter — Convert WebP or AVIF images to universally supported JPG or PNG. Adjustable quality.
- SVG to PNG Converter — Rasterise SVG vectors to crisp PNG at any size — perfect for app icons and retina exports.
- Favicon Generator — Generate a full favicon package: 10 PNG sizes plus multi-resolution favicon.ico.
- Meme Generator — Classic Impact white-on-black meme captions on any image — no watermark, no upload.
- Instagram Post Splitter — Split one image into a seamless 3/5/10-tile carousel or a 3×3 profile-grid mosaic.
- Image Inverter / Negative — Convert any image into its colour negative. Useful for film scans, dark-mode assets, and art.
- Image Grayscale Converter — Convert any image to grayscale instantly — no upload.
- Image Blur Tool — Apply Gaussian blur to any image entirely in your browser.
- Image Pixelate Tool — Pixelate images for retro 8-bit looks or anonymization.
- Image Flip Tool — Mirror images horizontally and/or vertically.
- Image Black & White Converter — High-contrast B&W conversion with adjustable threshold.
- Pixel Color Inspector — Click any pixel in an image to read its exact RGB and HEX.
- HEIC to JPG Converter — Convert iPhone HEIC/HEIF photos to JPG or PNG. Open Apple photos on Windows and Android.
- Video to GIF Converter — Convert MP4, WebM, MOV clips to animated GIF — trim, set FPS & width, no upload, no watermark.
- AVIF to JPG Converter — Convert modern AVIF images to JPG or PNG for Photoshop, Word, and older apps. Batch.
calculator tools
- Prime Number Checker — Test primality, list factors, and find the next prime number.
- GCD & LCM Calculator — Find the GCD and LCM of two or more numbers.
- Statistics Calculator — Mean, median, mode, range, variance, and standard deviation in one view.
- Triangle Calculator — Given three sides, compute area, angles, perimeter, and classification.
- Pace Calculator (Running) — Compute pace, time, or distance for runs and races.
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